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CHARLES JAMES APPLEBY, OF SOUTHVARK, COUNTY OF SURREY, ENGLAND.

SHAFT-BEARING FOR TRAVELING CRANES.

SPECIFICATION forming part of Letters Patent No. 291,861, dated January 15, 1884.

Application filed October '22, 1883. (No model.) Patented in England Decembcr, 1379, No. 5,226.

To all whom it may concern:

Be it known that I, CHARLEs J. APPLEBY, of Southwark, in the county of Surrey and Kingdom of Great Britain, have invented a new and useful Improvement in Shaft-Bearings for Traveling Cranes and Similarly Traveling Devices, which improvement or invention is fully set forth and illustrated in the following specification and accompanying drawings, and for which invention Letters Patent of Great Britain were duly issued to me, numbered 5,226, dated the 22d day of December, 1879, and sealed the 18th day of .I une, 1880.

The object of the invention is to provide a bearing or number of bearings for a rotary or other shaft, which bearings shall be successively and autoinaticallymoved out of the way of a traveling crane or similar device, orsome part thereofl to which such revolving shaft may be connected, and again restored to support said shaft after the crane or some similar traveling device shall have successively. passed beyond such bearings.

To this end the invention consists of the parts hereinafter described, as set forth in the claims.

In the said drawings, Figure 1 is a perspective view of the invention, showing parts of a crane traveling past one bearing after having depressed said bearing out of its way. Another bearing is also shown to be similarly operated as the crane progresses. Fig. 2 is a geometrical side view of one bearing and operative attachments, partly in section.

In said gures, the letter A indica-tes a ro tary shaft, and B a vertical hollow bracket fixed against a wall, C. rlhe arm D turns upon a journal, E, and has at its outer end a bearing, F, which supports the shaft A. A rocker-arni, G, turns upon a lower journal, H, and its outer end, when raised, lifts with it the arm D until the bearing F is in its proper position, when said outer end engages with the catch or shoulder I, so as to firmly support the arm D. The rocker-arm G has also an inner end formed into a shorter eounterbalance-arm, I', jointed to the vertical rod or bar K, which rod is suitablyguided by the bracket B, and the upper end of which is fitted with aslotted head or slide, L. The plate or bar M is attached to the traveling crane 0, or

other machinery which has to pass along the shaft A, and it carries vat its lower edge a double'inclined or curved bar or cam, N, which ts into and passes through the slotted head L of the rod K, Fig. 1, as the crane travels along the shaft A, which is shown square in section (except at its journals) for driving the traveling pulley. It cau now be readily perceived't-hat the respective inclines or curvatures given to the bar N at its ends are suoli that the advancing end of said bar, (in whichever direction the bar may travel,) when it enters the slotted head L of the bar K, must raise said head and pull upon the bar K, which in turn raises the counterbalance-arm I', and depresses the arm G, throwing it out of engagement with the arm D, which immediately descends, following'the arm G bygravity, and carrying with it the bearing F, away from and below the shaft A, as shown in dotted linesin Fig. 2. As long as the central portion of the bar N, which is straight, remains within the slotted head L, the bearing B will remain depressed; but when the rear or following end of the cam-bar N is passed through the slotted head L, it is equally evident that its shape is such that it will depress said head and the rod K, and thus, through the intervention of the arms I and G, elevate the arm D and bearing F, to again support the shaft A, the arm G again engaging with the catch or shoulder I on the arm D. Of course this raising of the arm D only takes place after the part or pulley to which it is an obstruction has passed beyond it, and it remains up in place until again displaced, as just described.

The shaft A may be round in cross-section., instead of square, if preferred, and fitted with a feather or feathers for pulleys driven by it andtraveling upon it. It is obvious, also, that the rod K may be made to operate the rocker arm G from below instead of from above, as shown in the drawings, a push being imparted to said rod in such case, instead of a pull, in order to effect the same movement of the bearing D.

I do not confine myself to the precise forms of construction herein shown and described, as the same may be varied in mechanical detail and arrangement without departing from the invention itself.

IOO

proveinent, as of my invention I elainisaid rocker-arm, and a moving or traveling 1. In combination with a pivoted bearing Gain operating said rod, whereby said bearing for a rotary or other shaft, a oounterbalaueed is automatically depressed and elevated, sub- 5 rocker-arnisupporting said bearing, anda rod stantially as and for the purposes set forth.

or bar connected to said rocker-arm for actuating the same, substantially as and for the Having` thus fully desoribedrniy said iining said bearing, a rod or bar connected to CHARLES JAMES APPLEBY.

purposes set forth. Vitnesses:

2. The combination of apivoted bearing for FRANoIs REILLY, 1o a rotary or other shaft, a rocker-arm support- ROLLIN E. BEERS. 

